<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> <!--Converted with LaTeX2HTML 96.1-c (Feb 29, 1996) by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds --> <HTML> <HEAD> <TITLE>10.2.3 signal under Linux</TITLE> <META NAME="description" CONTENT="10.2.3 signal under Linux"> <META NAME="keywords" CONTENT="lpg"> <META NAME="resource-type" CONTENT="document"> <META NAME="distribution" CONTENT="global"> <LINK REL=STYLESHEET HREF="lpg.css"> </HEAD> <BODY LANG="EN"> <A NAME="tex2html2101" HREF="node142.html"><IMG WIDTH=37 HEIGHT=24 ALIGN=BOTTOM ALT="next" SRC="/icons//next_motif.gif"></A> <A NAME="tex2html2099" HREF="node138.html"><IMG WIDTH=26 HEIGHT=24 ALIGN=BOTTOM ALT="up" SRC="/icons//up_motif.gif"></A> <A NAME="tex2html2093" HREF="node140.html"><IMG WIDTH=63 HEIGHT=24 ALIGN=BOTTOM ALT="previous" SRC="/icons//previous_motif.gif"></A> <A NAME="tex2html2103" HREF="node1.html"><IMG WIDTH=65 HEIGHT=24 ALIGN=BOTTOM ALT="contents" SRC="/icons//contents_motif.gif"></A> <BR> <B> Next:</B> <A NAME="tex2html2102" HREF="node142.html">10.2.4 Signals supported by </A> <B>Up:</B> <A NAME="tex2html2100" HREF="node138.html">10.2 Signal handling</A> <B> Previous:</B> <A NAME="tex2html2094" HREF="node140.html">10.2.2 Linux signal options</A> <BR> <P> <H2><A NAME="SECTION001123000000000000000">10.2.3 <EM>signal</EM> under Linux</A></H2> <P> Under Linux, the <EM>signal</EM> function is equivalent to using <EM>sigaction</EM> with the <TT>SA_ONESHOT</TT> and <TT>SA_NOMASK</TT> options; that is, it corresponds to the classic, unreliable signal semantics as used under SVR4. <P> If you wish <EM>signal</EM> to use BSD semantics, most Linux systems provide a BSD compatibility library which can be linked with. To use this library, you could add the options <PRE> -I/usr/include/bsd -lbsd</PRE> to the compilation command line. When porting applications using <EM>signal</EM>, pay close attention to what assumptions the program makes about use of signal handlers, and modify the code (or compile with the appropriate definitions) to get the right behavior. <P> <BR> <HR> <P><ADDRESS> <I>Converted on: <BR> Fri Mar 29 14:43:04 EST 1996</I> </ADDRESS> </BODY> </HTML>